RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Skip to content. | Skip to navigation

Home → Publications → National Nursery Proceedings → 1966 → Studies Of The Biochemical And Flowering Responses Of Douglas Fir To Nitrogen Fertilization